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How to Replace the Key Battery of the Audi A6

Model: Audi A6 MK 2, C5 - Years 1997-2004
Part: Key

Inside the key of your Audi A6 Mk2, there are two button batteries. Below, you will learn how to replace them quickly and safely. First, get a small flathead screwdriver and use it to remove the back cover of the key. Once this simple task is complete, locate the two batteries and remove both. Finally, insert the new ones (model CR2025) and reattach the back cover you removed earlier. At this point, test the key's functionality, and you are finally done.

Updated on 19 July 2026 by ScegliAuto

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